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drm/i915: Use vblank_disable_immediate on gen2

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The vblank timestamp->counter guesstimator seems to be
working sufficiently well, so there's no reason not to
disable vblank interrupts ASAP even on gen2.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190322180804.3300-2-ville.syrjala@linux.intel.com
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Ville Syrjälä 2019-03-22 20:08:04 +02:00
parent d938da6b13
commit 0df3f09d00
1 changed files with 1 additions and 7 deletions
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8
drivers/gpu/drm/i915/i915_irq.c
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@ -4642,13 +4642,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
else if (INTEL_GEN(dev_priv) >= 3)
dev->driver->get_vblank_counter = i915_get_vblank_counter;
/*
* Opt out of the vblank disable timer on everything except gen2.
* Gen2 doesn't have a hardware frame counter and so depends on
* vblank interrupts to produce sane vblank seuquence numbers.
*/
if (!IS_GEN(dev_priv, 2))
dev->vblank_disable_immediate = true;
dev->vblank_disable_immediate = true;
/* Most platforms treat the display irq block as an always-on
* power domain. vlv/chv can disable it at runtime and need